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Trass vs Thass - What's the difference?

trass | thass |

As a noun trass

is (geology) a white to grey volcanic tufa, formed of decomposed trachytic cinders, sometimes used as a cement.

As a verb thass is

.

trass

English

Alternative forms

* tarrace * tarras * terras

Noun

(-)
  • (geology) A white to grey volcanic tufa, formed of decomposed trachytic cinders, sometimes used as a cement.
  • A coarse sort of plaster or mortar, durable in water, and used to line cisterns and other reservoirs of water.
    • (Webster 1913)

    thass

    English

    Alternative forms

    * (l), (l), (l)

    Verb

    (head)

    • References

    * “ thass]” listed in the [2nd ed., 1989